Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwDv7ImdNAYCZVJ3pK/hzXxr/SXQEE+aKjLe3AWpC4xYTAXcR+tXD8cfbzo4… (844 chars)"
  }
}